Greetings Bonnar Bloke from New Zealand.
Have just popped out to the shed to read the sideplate
Mower No 17 15184
I think it is the original engine that was on it new, maybe from the early 1970's. It is a 20 inch Supercut, petrol. The catcher has been remanufactured to fit the frame, but otherwise is pretty original. Red cushion taping of handle is my own touch, original was black plasicated. I have even got the early decal on the catcher now - will post a photo tomorrow.